An earthquake of magnitude 6.3 struck off the island of Crete in Greece on Wednesday, the German Research Centre for Geosciences (GFZ) said. The quake was at a depth of 52 miles, GFZ said.

More than 200 firefighters are struggling to tackle an out-of-control wildfire on Crete — Greece’s largest island and a tourist hotspot — as authorities order mass evacuations. The fire ...